Why does this always happen? - teknotus means Take Notice

Why does this always happen?

I'm chatting with my friend over IM because I am stuck at work. A minute after my friend decides to do something else I get the OK to go home. It works in reverse too. I call around to find a friend to do something with, and then wait about an hour to see if anyone will call back. It doesn't seem to matter how long I wait. I eventually give up, and go to the store or something. When I get home I will have a message that my friend called just after I left.